John Scott Haldane:
John Scott Haldane was a British biochemist who investigated the actions of gases and respiration.
May 3, 1860 in Edinburgh, Scotland
March 13, 1936 in Oxfordshire, England
Claim to Fame:
Haldane was an authority on respiration and breathing. He investigated the effects of different gases on the human body by exposing himself to potentially toxic gases and recording the effects. During World War I, he was sent to the front to investigate the poison gases that were beginning to be used. He developed the first gas mask as a result. He also invented a decompression apparatus to make deep sea diving safer.